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MAY 9 1960, 6-14-1960; Planes Worth Modeling - Lockheed U-2; Mystery plane? Built for flight at his altitudes, this amazing craft has been service flown in both England and on the Continent-according to foreign magazines. Speculation aside, makes a rare project.; (Photo By Bill Johnson/The Denver Post via Getty Images)

MAY 9 1960, 6-14-1960; Planes Worth Modeling - Lockheed U-2; Mystery plane? Built for flight at his altitudes, this amazing craft has been service flown in both England and on the Continent-according to foreign magazines. Speculation aside, makes a rare project.;  (Photo By Bill Johnson/The Denver Post via Getty Images)